GEOG 2050 Chapter : Geography
Document Summary
The idea is to create an integrated whole earth concept. Geographers analyze the differences and similarities among those 5 spatial themes: 2. A closed system often runs out of resources as there is no exchange with an outside source: feedback loops: positive vs. negative, a circular process caused when a systems output serves as input to that same system. May be either positive or negative: help explain why ecosystems and natural environments function as they do, negative feedback loop: output acts as input that moves the system in the opposite direction. This stabilizes the system keeps in equilibrium. Thermosotat, responses in human body, global temperature: positive feedback loop: output acts as input that moves the system further in the same direction. This magnification of effects destabilizes the system. Examples: glacial melting, erotion: emergence, refers to the concept that the whole is greater than the sum of its parts. Every meridian is of a great circle that passes through the poles.
